i would do most it myself because i enjoy a good project. i wouldn't touch electrical though

Being that I live in the house with my dad since my mom passed away and one day this house and land will be mine anyway, I would probably spend about 20k doing a little remodeling in the house especially on the bathrooms. I would build a nice big patio out back, and spend 8k on a nice zeroturn mower to mow the grass since we have almost 14 acres of land and half of it is grass. I would put 50k a peice aside for both of my daughters into a college/nest egg fund for them for when they get older. Invest about 100k, possibly buy me a 2500 hd duramax 4x4 truck, and i would supercharge, paint and do coil overs and some other odds and ends on the miata. That would account for most of it, I have a whole entire whopping 2500$ in debt so I don't have debt to pay off like most people thankfully.

300k hrmmm...

Pay off car and student loan ~7k
Sell my MR2 finally +~7k
Purchase a nice DD ~25k
Give 10k to bro and mother 20k
Build a house with badass garage 110k (Georgia lol)
Build computer lab in said house ~20k
Invest the rest.

300k would cover a nice down payment on a new house, closing costs, furniture, moving costs, and maybe 2 down payments on new DDers.

with a little leftover to put in the bank.

the bank!?

the bank...

you mean where they pay you 0.23% interest?

it used to be 5%. I think it's 0.19% now.

Pay off both houses, fund my 401k as fully as possible out of my regular pay to catch up from neglecting it for 4 years, fund my Roth up to the annual legal limit, ditto on both of those for the wife's 401k and Roth, take a vacation this summer to Anguilla again, and put most of the rest in a Vanguard small cap or mid cap index fund to park it and let it work. I would probably re-sod the yard, trim some large trees back, and dredge the opening to my little cove up at the lake for a deeper draft boat. I would probably invest in Xidas, some RS3's, and forged rods and pistons being installed, but that's about it. My wife wants to go someplace exotic like Dubai for a vacation so I would probably do that as well.

That's more than all of it I'm sure.

Go to college.

Look for jobs where I could intern part-time and learn a new career. Something I would at least like this time.

Put new flooring,new windows and new efficient AC in my GF's home.
Buy myself a decent home with a garage.
Build my Coyote V8 Miata and a Volks-rod.
Invest the rest.

Either all that, or buy a tank of gas...

Start a garage. My dream job is doing everyday what I do to my Miatas, and 300k would get me started. My father does it to Mustangs and he does pretty well for himself, I'm sure I could do alright with fixing up and selling old imports.

Also I would add to the stable a 94 B&T, a 2005 Mazdaspeed in Velocity red, and my wife would finally get her Bright red FD RX-7:D

I would probably be doing a lot of what Six suggested. I would love to buy a Waco Biplane, but TCO is just ridiculous. I hear people back and forth about paying off the house, so I probably wouldn't pay it off, but would pay it down. I'd pay off the wifes truck and buy some land for a garage and some cows. Maybe, I would provide the property for Aaron's garage that I would love to be his silent backer in. As for cool car purchase, I change my mind almost as much as I change my underwear. Early 80s 911, S2k, Lotus, or wait a few years for the TDI and then swap it for the new Golf R. I can't decide and the wife would yell at me anyway.

Most of this is already in the works, being handed $300k I didn't work for is even better.