Self IP for floating IP?

I am finishing up my configuration of a set of 9.2.5 redudant pair LTM units and I have a few quick questions.

 

 

If I have a front side of:

 

 

LB1: 10.10.1.5/24

 

LB2: 10.10.1.6/24

 

 

VIP1: 10.10.1.7:80/24

 

VIP2: 10.10.1.7:443/24

 

VIP3: 10.10.1.8:80/24

 

 

Do I need to make the 10.10.1.7 and 10.10.1.8 a Self IP on the device and check the float option on each unit (and set unitID1 and unitID2) or any IP that you make a VIP not need to be added to the self IP area?

 

 

 

My second question:

 

What is the cleanest way to preserve ourside IP information for my inside network? Would setting up n-path and placing a loopback IP for all the vip IPs be what needs to be done? Or is there a way to set up the LBs to keep source address and allow the boxes on the inside network (assumed web pool) to reply using default gateway? Or should I set the Load balancers themselves up as a gateway device and use an Inside vip and point the servers at the inside VIP as the gateway/router?

 

 

 

Thanks in advance for the help. Feels good to be playing on F5s again :-)