7.9 is low and you're dealing with an old chamber design so fuel economy might be low. It would run but I'd keep an eye out for a smaller chamber version. Maybe someone has reasonably priced set near you?

https://klamath.craigslist.org/pts/6052760055.html

https://medford.craigslist.org/pts/6060150751.html

https://medford.craigslist.org/pts/6044010787.html

https://medford.craigslist.org/pts/6041504992.html