Thanks for those advices guys but i have enough experience putting bigger engines on other planes with little to no problems flying them, I know it is going to be weight added but the main problem with the saito 82 is that i will need to use 30% of nitro to get the power i want and I just don´t dont want to spend so much on gas that´s why i am looking at a bigger engine on this plane, I am going with a saito 91 or 100 as the 115 will really be to much, a guy on my field is already running one and it will be just to much for the airframe I will buy it anyway but for a bigger plane not this one, I am at sea level but it gets to hot somethimes and I need to switch between props in summer and winter going from a low pitch in winter to a higher pitch in summer (14X4 to 14X6 on my O.S. 70 Surpass just to give an example) that solves the problem but i want more power I want bether performance I know what a saito 82 can do i've seen it and I am sure it wont give me what i am looking to get with 15% of nitro even with 30% i don't think that I will be satisfied at all

Forgot to mention something i have never experienced a landing gear issue or a broken firewall for to much power or an overweight airframe
Good luck to you with your pullouts down on the deck

Hey metallicajunkie what servos are you using? do you think i will be better with a saito 100?