|192.168.1.0/24 (ie: subnet mask 255.255.255.0) will have a range of IP's as follows:|
192.168.1.1 through to 192.168.1.254
So all the IP's you've chosen are valid and should be able to communicate with each other. Although why you went through the trouble of changing it, I don't know.
Most typica SOHO Routers create a DHCP Scope similar to the following (using your subnet)
192.168.1.100 through to 192.168.1.199
I will say this thought, it's usual, and preferable, to have your gateway IP be .1 This will make your life simpler should you ever have to supernet.
Having said that, if you've configured your scope as above, the IP's you've chosen to use are outside of it so you needn't worry about making reservations or having duplicate IP errors.
You said, "We've managed to ping the printer port succefully, but couldn't send print jobs to it."
This tells me the netowrk is configured correctly and working. The issue seems to be the printer you're trying to create on the client. I suggest you try redoing the printer on the client. First, delete the one you've already created and then do the following:
Click on my name above in this response and read my “how-to” guide titled, “Installing a Network Printer: version 2”
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.