i would disagree. his cycle looks just fine. if he ups his sust dose it will cause the test and tren to interact more and cause more sides from the tren. I run just a HRT dose of test with a higher tren load. Hardly get sides and see great gains. the tren is the strongest of the compounds of your cycle so you want that compound to do the most work. if you up your test your sides will be greater in ratio to your gains.
if anything (depending your previous cycle experience) i would bump up the tren and masteron. your on a 14 day shooting schedule with EOD injections. so one week youll be getting 300 mg and the other youll get 400 mg. with the tren that will be enough to get something out of. but with the masteron i would run it 500mg - 600mg a week. its not a strong compound like your other 2 are. but it is a DHT based item and you stated your prone to hairloss. and with the inclusion of the Tren they should mesh well and give you a good cycle. So just keep your cycle how it is.
just my 2cc's