Configuring a5505 setup public server + DMZ

Question

Please bear with me, as am I utter new to the a5505 and Cisco products in general.
Setup:
LAN (192.168.1.X, with .3 as gateway)
DMZ (192.168.2.X with .1 as gateway)
WAN (X.X.X.146 as primary public IP, .145 as gateway and .147-150 as additional public IPs)
I want to set it up so that X.146 is where all my outbound traffic appears to originate.
I want tcp HTTPS and SMTP to be allowed from the WAN (via the X.147 IP) to a specific server (192.168.1.11) on the LAN.
Also, HTTP traffic to X.148, X.149 and X.150 should go to DMZ and 192.168.2.8, 192.168.2.15 and 192.168.2.18 respectively, but I haven't added that to my config yet. Looking to get the HTTPS and SMTP ones working first, then I'll fix the others (one step at a time)
I've got contact with the outside world when I've configured it using the ASDMs "Public Server" interface, but it refuses to properly establish the connection, I get a "SYN timeout".
I'm sure it is a simple mistake I've made someplace, but some of this stuff is greek to me sofar, I must admit..
My config:
: Saved
ASA Version 8.2(5)
hostname kcisco
enable password X encrypted
passwd X encrypted
names
name X.X.X.144 outside-network
interface Ethernet0/0
switchport access vlan 2
interface Ethernet0/1
switchport access vlan 5
interface Ethernet0/2
interface Ethernet0/3
interface Ethernet0/4
interface Ethernet0/5
interface Ethernet0/6
interface Ethernet0/7
interface Vlan1
nameif inside
security-level 100
ip address 192.168.1.3 255.255.255.0
interface Vlan2
nameif outside
security-level 0
ip address X.X.X.146 255.255.255.248
interface Vlan5
description DMZ interface
no forward interface Vlan1
nameif DMZ
security-level 50
ip address 192.168.2.1 255.255.255.0
ftp mode passive
clock timezone GMT 0
object-group service DM_INLINE_SERVICE_0
service-object gre
service-object tcp eq pptp
service-object udp eq isakmp
service-object udp eq 1701
service-object udp eq 1723
service-object udp eq 4500
object-group service DM_INLINE_TCP_1 tcp
port-object eq https
port-object eq smtp
object-group service DM_INLINE_TCP_3 tcp
port-object eq https
port-object eq smtp
access-list outside_access extended permit tcp any object-group DM_INLINE_TCP_3 host X.X.X.147 object-group DM_INLINE_TCP_1 
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu DMZ 1500
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
static (inside,outside) X.X.X.147 192.168.1.11 netmask 255.255.255.255
access-group outside_access in interface outside
route outside 0.0.0.0 0.0.0.0 X.X.X.145 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd auto_config outside
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
prompt hostname context
no call-home reporting anonymous
Cryptochecksum:cc8458013e545e2e7ba1e2c0caa3dd6a
: end
no asdm history enable

Answer 1

Thanks, fixed that at least.
But still no further in getting the connection to be established.
I see this in my logs:
6 Oct 09 2012 15:29:22  Z.Z.Z.Z 42061 192.168.1.11 443 Built inbound TCP connection 1064 for outside:Z.Z.Z.Z/42061 (Z.Z.Z.Z/42061) to inside:192.168.1.11/443 (X.X.X.147/443)
6 Oct 09 2012 15:29:52  Z.Z.Z.Z 42061 192.168.1.11 443 Teardown TCP connection 1064 for outside:Z.Z.Z.Z/42061 to inside:192.168.1.11/443 duration 0:00:30 bytes 0 SYN Timeout
(Z.Z.Z.Z is the outside host I am testing from)
(I've connected the mailserver to the firewall and configured it to use the FW gateway (192.168.1.3)