Sounds like you're very meticulous with your maintenance so why try a questionable quick fix?
Oil leaks aren't disastrous so long as you maintain proper oil levels. Continue maintaining and when you have the $$ fix it properly. Also remember that what may look like a valve cover leak may actually be something else. Example: My PPI MB Dealer said my passenger side valve cover had a significant leak which would need to be addressed. My indie and I cleaned out my engine bay and monitored the engine for the next couple of months. Turned out the leak was caused by the oil filler cap and two breather hoses. The engine hasn't had a leak since.
I'm guessing you've already cleaned your engine and sourced the leak but just in case it may be worth it if you haven't.
Good luck and don't get dissapointed, it is a mechanical object which offers qualities other vehicles can never provide.....so take the good with the bad.