Militant Potato -

You sound very depressed - and you have a right to be.
But that still doesn't change the fact of the depression.
Combine that with nasty weather and meager financial resources -
And it is a recipe for even deeper depression.

I've got oodles of touring miles - including some in the cold back East.
And trust me, it ain't pleasant even for a hardcore oldtimer.
Cold, damp, grey, bleak - - not the circumstances you need.
And as poor as I am - I've had to use lots of motels.

If you have the plane ticket, use it.
You can fly down to Florida and find plenty of places to hike and bike -
Find people online here and in clubs down there.
Do weekend or week long trips - - with somebody.

Are you aware of the canoe trails in Okeefenokee Swamp?
There's Cumberland Island which is really sweet.
My suggestion is to get to Jacksonville and head out from there.

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I am also aware that many times alcohol & drugs have a role in marital difficulties.
Kinda chicken & egg, not sure which comes first, but the two are often in tandem.
That may or may not apply to you - but if it does, you have an opportunity to deal with it.

Again, what little you have posted has been a red flag for me.
Please, think twice before heading out.
There are many other ways to use this time and engage the outdoors.
Don't punish yourself with a trip like this - you've been punished enough.

I wish you the best in whatever you choose to do.