If you're up for it, the five can be done from near Coileitir - about 27km and 2,600m ascent. Here's a report and route which may help. Brutal start up Ben Starav but that gets a large chunk of the ascent out the way. Just noticed this comment now and it's longer with more ascent than I'd calculate...

I did the southernmost three in one day and northernmost another day. I had thought of doing all five in a day but the drop between hills is greater than expected (I hadn't done many Corbetts back then :lol:) and all five will probably be ~2, 500 metres of ascent. Re: other Munros, you can't really...