given the difference in speeds between the two links I would consider a setup where ISP2 link is primary and ISP1 link is secondary and used only if primary link fails.
You have not provided any information about the topology, if the two eBGP sessions are terminated in two different border routers or only in one router.
An attempt to perform load sharing over the two links can be done using DMZ link bandwidth feature. Because both links are from the same ISP you don't need to play with hidden commands to implement load sharing.
Read the following document about DMZ link bandwidth
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...