i have a single 3 digit 7 segment led display - 11 pin

i also have some 74hc595's and MAX7219's to connect the segment display to - (i don't know which is best but i think it will be 74hc595??0.. i do not need the DP
11 buttons will control this display as follows
buttons 1-10 will consist of double press to fill the display, example of this
button 1 - you press once to get the letter A and then say you press button 1 again the display will be A01
buttons 1-10 are A-J and 1-10.... (A/21, B/2,C/3.....J/10)
button 11 will start the display at 000 and be the SET button
SEQUENCE
button 11 sets display to 000 buttons 1-10 are useless until this happens
select a letter with buttons 1-10
select a number with buttons 1-10
button 11 clears display - button 11 is useless until the above 2 steps happen
with whatever was set with button 11 will turn on a certain set of leds.. for now though i have a bi-color led for testing so let's go with A01 the bi-color led turns on red and A02 the bi-color turns on green
END SEQUENCE
keep in mind that there will be an on/off switch to turn on before any buttons can be used.. but i am not concerend about that right now, just keep that in mind for later
thank you