Load Balance with PPPoE connections to same ISP

Is it possible to setup load balancing to PPPoE to the same ISP (possible same gateway)

Im trying to keep from NAT’ing more then once from out office to a remote tower.

I currently have 6 DSL Lines being load balanced on a 493. problem is modems are setup as NAT(10.2.x.1). then again the 493 NAT to tower(192.168.10.x), which again NATs to customers. (192.168.1.x)

How can I cut this down?

Why NAT on the tower and the customer equipment? Just route everything to the border router, and NAT to the ISP.

I guess I need more info on how to:

right now its :

Modem(NAT)10.2.x.1 — (10.2.x.2)RB493(192.168.254.x) ---- 5Ghz (Ubiquiti-192.168.254.x) -----(192.168.254.x)RB750 (192.168.0.x)—2Ghz (Ubiquiti)(192.168.0.x) --(192.168.0.x) Customer CPE

think i wrote that out right.

Either use static routes (though this won’t scale well), or a dynamic routing protocol such as OSPF. Then all traffic within your autonomous system can be routed without NAT, and you just NAT on the egress point.
If you need more information on OSPF the Mikrotik wiki has very good articles, and so do the public manuals from Cisco and Juniper. That’s not something that would be feasible to cover in a forum post.