I'm getting an Aquawood 12x24 semi-above ground insulated pool (8000 gal.) with a Pentair 40 w/ 1.5 hp and a Raypak Versa 130k NG heater with cupro-nickel as I'm thinking of going with the Intellichor IC20. Is this the best choice in a less than $400 generator or what other should I consider? How about the Intex 54601EG? Specs say it can handle pools up to 12k. I see this model can be had for about $120. Good deal or stay away?