I've had 3 routers, based on my experience, I wouldn't buy a cantilever machine. Get the largest table you can fit or afford (I'd get 5x12, but I do lots of commercial work.) The drill block can never have too many! Horizontal drills are rarely used. An L configuration allows line bore in either X or Y. Get at least 8 tool change positions. Spindle HP, even an 8HP one will cut 3/4" melamine at 600"/min. with a 2 flute compression or even 900"/min. with a 3 flute. Cutting speed is a function of chip load not HP. There is little difference in cost between 8, 10 & 12hp spindle motors so most suppliers now use the 12HP ones.
Having the push off option is well worth it, greatly improves thru-put & reduces the dust in the air problem associated with air blow off. Multiple vacuum zones aren't particularly valuable, most of the time you will be cutting full sheets. When you occasionally need to cut a single part just lay a pc. of laminate on the unused area. Vacuum pumps: my first machine had a 10hp Becker, OK pump just too small. Two 10's or 15's make sense to me. Run just one, if it works, the 2nd one when you are cutting lots of small parts or through cuts in parts that bleed off the vacuum. Having two pumps also gives you a back up if one needs servicing. My current router has a 40hp screw, eats a lot of electricity. No matter how big the pump, you will need to tab or onion skin very small parts, set your software to take care of that. Use high quality bits, cheaper in the long run. We use Onsrud Marathon bits.
Better to be a little over spec'd than wishing you had spent the extra in the first place.
You will wonder why you didn't buy one sooner.