I think your experience is below the minimums they post on the website for FO.
I understand internal references are a big help and significant multi/turboprop/jet etc is prefered.
It can be difficult to get back in the saddle after 10 years out and Porter seems like a pretty cherry job for someone on a tuboprop looking to make an airline move. Might be a tough nut to crack getting back in? Lots of competition... I'd try them of course, but you might want to look toward anything to get you going again - maybe a king air or pilatus sorta thing and build on that.