OBIEE on RHEL5.5 using clustering of 4 nodes deployed on weblogic

It is my first experiance of installaing OBI in production enviornament. I have to install OBIEE 10.1.3.4.1 on four IBM HS22 Blade Servers, under RHEL 5.5, deployed on Weblogic in active/active configuration. Weblogic will be clustered. I am confused of steps of installation, please rectify me if following steps are wrong:
Step 1: install Weblogic on Node1, and configure clustering of Weblogic on other 3 nodes.
Setp 2: Install OBIEE on all 4 nodes. Complete installation, not specific products, using Advanced installation type. so that all componets are installed on all the nodes
Step 3: Configure clustering of OBIEE keeping Node1 as Master BI Server, Primary Cluster Controler, Primary scheduler.

i am plaining for complete installation on all the nodes but while doing configuration in files NQSConfig.INI and NQClusterConfig.INI etc, i will do like
Node1 as primary node for cluster and scheduler and Presentation Services and Master BI Server
Node2 as secondary node for cluster and scheduler and Presentation Services and BI Server
Node3 as BI Server
Node4 as BI Server
I can install only one component BI Server on Node3 and Node4, but to keep my installation straight farward i am installing complete on all nodes. please suggest will it work. Or shall I proceed with complete install on Node1 and Node2, but custom install on Node3 and Node4
Regarding load balancing this has to be done by the cluster controler, please suggest if i am wrong. I have a separate WebServer which i need to configure.

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