I would definitely frontload TE, even with an oral kickstart, especially if you take the advice to do a shorter cycle. The faster you can get to steady-state blood levels, the better.
And I agree with everything butthole said about controlling estrogen. My training partner doesn’t even bother unless he starts seeing sides - he would rather be carrying more water as it makes the gear fit tighter and (he claims) helps lubricate his joints. I use 0.25mg E3D because anything more than that and I start getting low estrogen sides (loss of libido, anxiety, achy joints). That’s with research chem liquidex, though, so who knows.
You can use slin pins even with fairly thick oil - my TP flows like water, but my TE was very thick. The trick is to use the 0.5cc 29g pins - the smaller barrel means you can generate a lot more pressure, and generally you don’t want to put more than 0.5cc in one spot with a 0.5" pin anyway. With the TP I actually found myself having to slow down. I have 1cc pins now and the timing is about right, but you have to push pretty hard.
If the oil is quite thick, you can run the barrel under hot water for 30 seconds, being careful not to get any water under the cap. With a borehole that small, you rarely wind up with oil leaking out. The one time I pinned TP in my glute with a 23g 1.5" is actually when I got the most leakage. You can also completely eliminate any leakage by dong what’s called a Z-track injection, but that requires injecting a bit faster for comfort’s sake.
You would have to be pretty fat not to be able to inject delts and vastus lateralis with 1/2" slin pins. If you’re careful you can do vastus medialis as well. With a 1/2" pin, every square inch of skin is a new site, so you have 2-3 on each delt and at least a dozen on each leg. If you are lean enough you can pin the ventrogluteal site with a slin pin. Even if you wind up accidentally injecting subq, it’s not a waste of gear, it just hurts.
If you do wind up going that route (and you might as well at least try it if you decide to run hCG and have to buy slin pins anyway), backloading slin pins in the way to go. It takes forever to draw oil through a 29g. Even a 25 is pretty slow. Running the barrel of the larger syringe under hot water before loading the slin pins makes the process way faster.
There is something to be said for just sucking it up and sticking a big needle in your ass, and I did twice a week for five weeks, but when I switched to prop I had to pin ED, and it takes me a while to work up the courage to stick myself with a 1.5" pin and causes a lot of anxiety. Slin pins are a godsend.
This thread has some good info about injecting oil with slin pins: Insulin Sryinge Gauges - Pharma - Forums - T Nation