hi there Padruig. first, welcome to the forum. i made the same switch to traditionals about 2 years ago. and, i have tried a number of GEC's.
i read your wants, and they mostly coincide with mine. i wear a L size glove but do not consider my hands "large". but like you, i prefer a larger folder...something with substance. i also found i prefer a lockback. so, the 42 is about perfect for me. they are getting pretty hard to find, though. my runner up is the 72, and you should be able to find one of this year's models in the OD micarta, which was a material you had in your list.
someone else mentioned a 99. the 99 Farm & Field (lockback) may be my favorite knife that i have tried from GEC (i go back and forth between that and the 42). the handle length is actually a bit smaller, but the scales themselves are thicker. my hand loves it, so to speak. as an fyi, this model has the spear point blade.
the best advice i could give is to find a retailer that has a bunch in stock, if possible. i know that's easier said than done. i don't know of any that are out near you, but maybe someone else does. if not though, GEC's are desirable enough that you can get one, and if you find it is not for you, you can resell it and not lose too much.
anyway, happy hunting. as someone else mentioned, the looking is half the fun. cheers.