I'm am planning on buying Lopi Republic 1750 freestanding woodstove and installing it inside existing masonary fireplace. the stove will be 3/4 of the way inside fireplace and about 1/4 of it (4-5") onto hearth. this will still give me 16" of non combustible hearth in front of stove. the dealer recommended buying it with blower unit to help push heat out of fireplace. Is this worthwhile or necessary. Also, fireplace has an ash dump with a clean out opening in the basement. if i open ash dump would this be of any benefit in circulating heat?