I took Bio 230, and yes, I had that instructor as a professor for Bio 361, the "next level" of Bio 230, so I understand your concern. My advice is to avoid Bio 230, unless you have a burning desire to learn lots of genetics trivia.
The fact is that Micro 200 and Bioc 200 have a great deal of overlap with Biol 230. I think Micro and Bioc 200 will be adequate for the MCAT, doubly so if you also have Bioc 300. Fact is, getting a good commercial prep book (there are several at the UVic bookstore, see my MCAT page for two reviews) will probably be all the genetics you need. If you've got the understanding, and the concepts, you'll do fine.
Also, the lab techniques that you'll miss in 230 aren't particularly crucial to your understanding of genetics. I'd pick an elective that you're interested in, and that you can get decent marks in. You'll get all the genetics you'll ever need to know during your Biochem degree.