my DIY Gamebuino questions

Hello

I know its bad title but it was the best i could found in my mind.

I'd like to make a Gamebuino for myself i don't think this could be deliver to Iran, my country. plus i really like DIY projects.

I have found a lots of tutorials on the internet and official wiki. thanks for documentation.

in official wiki/documentation the AVR used is atmega328p-pu 32pin but i couldn't fine it in my around so i have to use 28 pin version.

i couldn't find the wiring sdcard to Gamebuino on 28 pin version.

and i have found for programming the micro using FT232RL it was a little bit expensive in my around can i use my own USB to serial (i used them to program Arduino uno on bread board) one of them is from D-sun and two ch340G one with DTS pin and one without.

and the next problem is all instructions i have found on the internet was wiring /soldering then play. I wasn't able to find exactly how to burn the Gamebuino bootloader or how to write games on micro without sdcard.

thanks for answering.