Just FYI...... I have personally seen two motors killed by 200cc sportsman heads. Both where 350's and both had cams bigger than the one's you are talking about. Both where street driven cars. First car had 186 double humps and they cracked. Second car had the early double humps without acc. bolt holes so he replaced the early heads to convert over to the long water pump setup.
Not a good head for the setup you are talking about.

The sportsmans are good heads in the right aplication. I have seen them work very well on a high revving solid lifter 350.