Network Flexibility, L2 or L3 access?

My company operates a small mobile network that supports ~75 users. Our physical location is moved on a regular basis and the area that houses the users is modified with each relocation based off of available space and resources. Due to wiring requirements we run all users off of 4 3750g switches all operating on layer 3 running EIGRP. Due to the ever changing state of our network end user devices are constantly changing which switch they are connected to, each switch has a constantly changing range of networks, and each switch is changing which network devices they are connected to. This has lead to a constant state of reconfiguration on our access level network.
I am looking for a solution for our access level that limits the amount of reconfiguration necessary each time we move. I personally advocate switching to a layer 2 topology as VLANS can be configured consistently across the network and trunks can be configured as plug and play regardless of which switch they are plugged into. However concerns have been raised regarding broadcast storms as we provide multicast video services to users. Our only requirements are the previously mentioned video services, VOIP, workstation access, one VTC, and remote management of switches.
I am fairly confident that with proper implementation of PVST+ broadcast storms can be negated however I need more voices than my own to convince my manager that this is a safe and reliable method of programming our network. Any confirmation of the viability of this plan or technical documentation I can show my manager would be appreciated.
V/R
Chris

Henry,
The best way to do it is using the method 2. This will gives us complete redundency in terms of link and l3 route to follow.
I would suggest to use the option 2.I understand that you need to make some changes to make it work but this will be a solution which will be worth to use. If I were you, i would have used the same one.
HTH, Please rate if it does.
-amit singh

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