If you really are just cutting for an hour every week then the this machine should do you fine. The feedrates of 22m/min in 18mm birch you were quoting are for big industrial routers that have big spindles, servos, vacuum systems and possibly tooling ( You can only push a 6mm cutter so fast) Any small scale machine is not going to match that performance in terms of 1. cut quailty 2. Last any time before something breaks/shifts/loosens/bends.