Moving Outdoors Advice?

Planning on moving these outside and into the soil in the next couple of days.
They've been on the windowsill and not under lights,

Just looking for tips on how to transplant, and how to make sure they survive out there.
Also any input on how they're doing would be appreciated..

They're nearly 2 months old.

Depends where outdoor's?and how much budget you have to get started too.
In my case,I have an open 5 acre area to work with,but it can be seen from the road
So my 6 plants are going into a cheap 8 x 48 green house(this also hides the plants from Google Earth)and from dust storms that really coat the tricomes with dirt!and protets the buds from hail storms.
I dug 3x3x3 holes and lined them with wire so the ground animals do not eat the roots.
the bottom of the holes have a 6 inch layer of gravel and the native soil is mixed with vermitulite 30%.
If you have a city back yard maybe you want to build raised planter boxes about 6x6 feet.

The best advice I can give is think about something before you do it, just use logic. These plants will get large when moved outside, put them in accordingly. When transplanting handle the stem and roots with care. Put them in a nice sunny spot and mother nature should take care of the rest, just make sure it's provided adequate watering and sun.