Brother cycles... Cheap as chips frames

I might PM you in due course, still deciding if I need (always want!) another bike... currently consulting my bank manager... the only issue I have is the top tube length, even for the smallest one, the TT is like 53.5cm which seems too long for me... the longest I can ride comfortably is around 52mm with a 70mm stem... so 53.5mm would mean a stupidly short stem...