Water in filter housing/ oil

Well my filter housing came loose yesterday and ended up getting some water in it, about 1/3 – 1/2 full. The machine did not die just seemd to be starved for air so I shut down and checked it out and when I opened the cap of it all the water poured out. Was going to just change the filter but when I got back to the machine with the new filter I thought I would check on the oil just to make sure there wasn’t any water in it, but sure enough the oil was milky looking so it took a good 6 hours to get it to a spot I could get it into my truck.
So I don’t know a whole lot about this stuff just yet but will be figuring it out tomorrow, I know I’ll have to drain my oil numerous times (was suggested to fill it with a mix of 50/50 of oil and jet fuel since we have lots around to clean it out a few times) and I’ll probably take all my intake ducting apart and clean it all up, I suppose I should also take the spark plugs out and turn it over to clear the water (never done this before).
Is there anything else you would suggest doing to make sure that everything is as it should be by the time I’m done with these repairs?

I should say that I don’t think much water made it past the filter but I’m sure some did as it’s made it’s way into the oil.

Any help with this is much appreciated as I don’t exactly know what I’m doing just yet.