SPDT16: 16-bits arithmetic unit with relays

Let's imagine I could get about 200 SPDT relays. Of course I would know what to do with them :-D But will 200 be enough ?

Quantity		Component name
300	×	РЭС15 (3V version) Russian mini-relay
5	×	DNL10S0A0R16PFD DELTA DC/DC SIP module
300	×	3mm Glühbirnchen 3V tiny incandescent lamp
5	×	Hexadecimal rotary switch
10	×	TIL311 Hexadeciimal LED display (obsolete, use #PICTIL instead)