But a decent punch down tool and you will be sorted.
Do everything right and you should, over those distances, be capable of supporting 1Gbit.
However, I would suggest running all infrastructure cable back to a single point and putting a small patch panel and switch at that point. Cable a pair of connections from your Modem/router location to the switch location. This allows the router to work as a modem, DHCP server and WAP without the additional loading of switching traffic and could always be a point of contention - whereas a dedicated switch can deal with routing and PC to PC transfers ...
My router has just a single cable coming off - straight into a switch and from there to all of the 40+ sockets. I have Wireless still working but nothing connects to it - just there if it is needed and there are 3 other WAPs
M H C
taurus excreta cerebrum vincit