I want to buy a lawn edger and a pole tree pruner to service only 5 small residential properties a week. I'm undecided whether I should get a 2cycle (31cc) engine or 4cycle (25cc). I plan to buy a weedeater type with exchangable extensions, e.g., edger extension and a pole chainsaw - or should I get the reciprocating saw? The choices are: (1) Reconditioned 2cycle Poulon Pro PP445 12' Tree Trimmer Gas Pole Pruner on eBay for $119 plus $20 shipping; or (2) Yardman 4cycle string trimmer at Home Depot for $75. If I buy the Yardman, I'll purchase the edger and pole pruner extensions separately. If I buy the Poulon, I'd only buy the edger separately. Will the 4cycle 25cc engine be strong enough to power extensions for the edger and a pole pruning chain saw? Thanks for any help.