Yes that's what I bought it for.
A 7 1/4 saw blade will fit and power saw that is only 7 1:4.
If it can hold a 7 3/4” blade, might work.
Nope blade will get to hot
If it’s pressure treated, yes, if it’s hardy board material ,, no
Wrong blade, plus your cutting 2 materials at once, your blade is getting hot,, please get a diablo blade 64 teeth carbide
The blade will get dull pretty fast
They do make larger blades for mitre saws, choose your blade what you want to cut.