You are already at a cross roads. Buy the enlarger (out here in the bay area a MX45 goes for around 125 bucks) or do contact prints. Trade that puppy in on a 5x7 camera, a 191mm Commercial Ektar and some bigger developing trays.
Nah, have a good time, learn if you like LF or not, contact print (and try Cyanotypes) and be prepared to be amazed.
tim in san jose