Thoughts on higher concentrations of T?

You know your C 200 and E 200, but have you ever had experience with a 300mg/mL solution? I purchased some E 300 in the past months and only started injecting last week. I can give my non-scientific opinion and say that low dosing 60 mg is really helping mitigating the PIP.

The benzyl alcohol and benzyl benzoate numbed my injection site (though I don't know if that's the intended effect) on day 0, then basically got absorbed first and left my skin helpless to absorb T on its own; this is my first hypothesis, second: it could be a reaction to the carrier oil mig840, but the irritation I've got points me towards testosterone not being absorbed correctly, worth saying I stupidly injected subcutaneously as before.

I don't think that's desirable if I intend to inject biweekly, should I consider diluting the solution or straight up switch to IM?