Need Porting Advice

ok so im looking to help out my whizzer engine as the ports are disgusting...

so i was going to smooth the obvious issues but as you can see the bored the hole for the valve and then for the port (90* for the exh/about 45* for the int) so around the valve guide it is just open with no radius... can i epoxy it on the intake?

any other advice...

P.S. how bout getting ride of the bump in the head and milling it to raise compression again (stock like 7:1)...