You can split your EQ into only 2 doses if that works for you. IME, I like to do EOD shots because once I add in the test and any other injectable compound that I might be using, the ML's of oil add up. I don't like injecting high volumes of oil into any given muscle, so splitting it up feels more comfortable. Either way, it'll work the same though.
As for which works better, Oral tren or tren injectable, IMO, tren injectable, hands down. Because OT is very toxic, you can only use it for short bursts. There are rare situations that a short burst may be what you need, say a strength event or the last few wks of a BB contest prep, but for most situations, being able to run a compound for longer, say 6-8 wks (or more with some drugs), will allow you time to actually gain muscle or burn fat. No matter how strong something is, your body is only going to be able to do so much in a handful of wks. I would much rather take something that I can sustain for a longer period