Newbie- I just ordered an FLA 100 and need to select a router

[MrTomSharp]

I just ordered an FLA 100 and need to select a router. (See Complete 2'x3' Router Kit : Fine Line Automation)

I have been looking at the following:
Porter Cable 690LRVS, 1.75 HP, 10,000 – 27,500 RPM, @ @154.40 new
Porter Cable 892, 2.25 HP 10,000 – 23,000 RPM, @ $172.25 new
Porter Cable 7518, 3.25 HP, 10,000, 13,000, 16,000, 19,000, and 21,000 rpm, @ $314.00 new

Upgrading from the 690 to the 892 seems to be a no-brainer.

I have watched a few videos of FLA-100s with PC690s and the router seems to be maxed out.

Would the extra HP from the 7518 be useful to increase cut rate and depth? Or would other factors limits such as lateral force?

Any input to assist in router selection is welcome.

Tom