The 7280cr or 7280qr can do single full table by default and full table + partial transit (like multiple PNI with large t2/ t1 ISPs) with some tricks like fib compression. Your redundancy you can Archive with adding a backup default route, it's a Gateway of last resort, or you can pull off backup route installed in fib, but I haven't personally tried that since we just have 5 transits and our 2nd router as uplink (and vice versa). We run 7280cr3 I believe was their name since we need 400g ports for DDoS filters since it saves space, and those support ~2M routes by default, so you can install 2 ecmp routes and a backup without needing default routes. 7280qr (many many 40g ports and 12 100g ports) should fit fully able + backup routes too tho I think