I have attached my network diagram in a pdf.
My ASA is configured with two outside interfaces
One to each ISP.
Each ISP router is getting a default route from provider.
I am currently using HSRP between the two routers on the inside interface on BVI interfaces of the routers.
I have a static default route configured on the ASA for ISP #1 HSRP's address.
I have IBGP running between the two routers.
I have a local weight preference on each router to take its own ISP out.
I want to utilize ISP #2 more and have created a few static default routes out that HSRP address.
Should I do away with one of the outside interfaces on the ASA?
What is the best way to handle the routing on the outside of the ASA?
>> My ASA is configured with two outside interfaces
this can be a problem. ASA can perform load balancing towards different next-hops that are out the SAME interface.
The ASA is a FW first, so the outgoing interface is chosen by the FW xlate according to its configuration.
>> Load sharing on the adaptive security appliance is possible only for multiple next-hops available using single egress interface. Load sharing cannot share multiple egress interfaces.
I would suggest you to review your design in order to have a single outside interface to reach both routers
Hope to help