Speed/Ease of completion - SL vs SDC vs Penn Foster

[allvia]

I would do Study.com first - SL doesn't have the UL courses you need in Accounting (or rather, they do, but they could be had at Study.com, and I'd prefer a single provider if possible, rather than splitting it up).

The CSU Global course is probably a duplicate of the TECEP, so that one's a toss-up.  But I'd probably go with CSU-Global and get any other UL courses you need.

Although honestly, I might just go to WGU and get the MS in Accounting instead.

Also with Study.com being the same subject matter you're likely to have some overlap and be able to complete quicker.  However, as dfrecore said going with the MS in Accounting through WGU might be quicker and cheaper - and you'll end up with an RA master in the process.