This debate will go on forever - from experience (years) of using both of those peptides they are both systemic but there is no doubt BPC157 worked better on specific injuries when injected as close as possible.
Everything I read on TB500 indicates it is is systemic and stomach injections or injections with a slin pin anywhere is essentially fine.
For example BPC157 - I had serious Achilles tendon injuries I injected one to rule out placebo effect. One healed / the other did not until I started injecting the other. I had chronic issues for years and BPC cleared up the issue in both in about a month - never to come back.
Other issues - not the magic elixir I hoped for. it works better on specific injuries - that is coming from my orthopoedic surgeon who is a world class powerlifter.
Anyway - for the sake of having as level as possible amount in your system, I put both in the same insulin syringe and injected as close to the injury I was healing daily.
Is BPC157 also systemic - yes I suspect it is, how could it not be? Other issues I had got better but the serious injuries I was treating took site injections.
I injected both daily and put them in the same syringe - some people say don't mix peptides. OK, if that is the case why do many peptide manufacturers make the combo of BPC and TB. I don't mix other peptides but have no issues mixing both.
There is nothing wrong with your protocol but if it was me - inject the TB daily with the BPC. Many will say inject Am and PM - made no difference to me. Once a day worked as well for me. I used 1000 mcg's or 1 mg of BPC157 and typically started with 1500 mcg's of TB500 a day. Reduced as I got better and stopped.
As previously mentioned - works great on some tendon/ligament issues. May help to some degree on some muscle issues but takes time and isn't magic. I ran a log on using both of these, Serostim, TRT and low dose deca to heal a bunch of injuries.
Any questions let me know - if I can help I will. I am not expert and can only tell you what I read, what the manufacturers of the peptide told me, what my surgeon said, and from years of trial and error.
Just to be clear I did not run TB500 for years (on and off for short periods) but did use BPC157 for over a year straight. The source matters so do your homework.
good luck