I am looking for an online case finder where I can enter in the dimensions of my camera with mike and lav attached and find cases that will fit it.

With the shotgun, windscreen and lav receiver mount attached, my XF305 measures 24" long, 11" wide and 12" high.

Is there someplace where I can enter these numbers and find cases of this size?

I am looking for a shoulder bag for around town travel and storage. For airline travel I will knock the camera down so it fits in a carry on.

I haven't done business with them, but Strut cases who advertise here look like they have a nice product and have dimension "fits" on their website

imo you need a case with pick n' pluck foam to protect the gear and the space between the items needs to be large enough to do that. I'd lay all the gear out on a table with that in mind then measure around the outside of that layout .. then look for a case. Pelican Products | Product Finder (http://pelican.com/search.php)

Lay the heaviest items (camera) near the case hinge, so when it stands up the weight is at the bottom. Study the PnP slicing technique and take your time. Pick 'N' Pluck foam - cutting tips (http://www.casesbypelican.com/foam.htm)

I've got a Pelican 1510, advertised as carry-on but when I load it up, it's too heavy for most carriers, also it's not temperature proof so don't leave it in a hot trunk for a few hours .. apart from that it's great. HTH

Cheers.

My friend and top sound recordist has just set up a company in the UK that may be of help to you: www.bestcaseuk.co.uk