keep it clean

My name is Scott, Have a P2 cert for paragliding, novice. Just bought Cors air Black Devil 172 CC. Bought used paramania revolution reflex 28 wing. Never flown paramotor before. Questions: Should I install head temp meter? Do I need all in one meter for RPM and hrs or separate for each? Advice on economical and easy to use communication system for pilot and ground man and where to buy. It cost me and my son $4000 on paraglider lessons. Should I spend another $4000 for paramotor lessons or learn on own. Any helpful books/videos other than youtube. Any other info for or advice to beginner that is new to this sport. Thanks so much