For the amount of carving you are talking about I think you will kill the mac in short order if they are built anything like remingtons.
Relief carving is bar tip intensive so a carving specific bar would really help out a lot.
If you really want to stay electric makita makes some really well built industrial quality saws, I own 2 models the 5012b with a manual oiler the chain speed on this saw is really fast, with a carving it is hard to keep up with enough oil.
The other makita is a uc3500 it has an auto oiler and is very smooth running you can put a quarter tip bar on it and run stock pitch 3/8 chain.
Carving bar information.
A dime tip bar must run a 1/4 pitch chain. The straps on 3/8 chain are too long to wrap the radius of a dime bar and the chain and bar will be ruined.
A quarter tip bar is as round as a quarter and will run 3/8 chain.
As for other tools I have an extensive assortment of hand carving tools and a pile of dremels and die grinders.
The saburr brand carbide burrs work well in my die grinders.
you can find a lot more info at this site.
Chainsawsculptors.com