Circles

I would go for 165mm cranks on a conversion as road frames tend to have a lower BB shell than a track frame and with longer crank arms your chances of having a pedal strike are increased.

Chainrng compatibility here is largely a non-issue, 144 BCD is track standard and so you can get rings without difficulty.

BB compatibility is something you want to keep an eye on as it is easier to get this part wrong, you might want to take a look through this list of drive chain combinations that have been successful for people ('successful' here means a good straight chainline).

Sugino 75 + Phil Wood + Phil Wood + Phil Wood = Cornelius Blackfoot
Sugino 75 + campag centaur 111mm + goldtec + eai = dogsballs
Sugino 75 + Miche + Formula = kowalski
Sugino 75 + Miche+ Phil Wood = adoubletap
Sugino 75 + Hatta R9400 + ShimanoHB7600 + EAI superstar cog = Tynan
Sugino 75 + Sugino 75 + Phil Wood + EAI = mr_tom
Sugino 75 + Dura Ace + Condor Goldtec + Condor CNC = Mouse
Sugino 75 + Campag Centaur 111mm + Goldtec + EAI= 31t®um
Sugino 75 + Hatta R9400 + ShimanoHB7600 + Dura-ace= Build
Sugino 75 + Phil (110.5) + Phil + EAI Superstar = Object
Sugino 75 + Miche + Phil Wood + Phil Wood = d.mac ( if it ever comes back from Condor....)
Sugino 75 + Sugino 75 + Phil Wood + Surly = Dannoleeed

miche+miche+miche+andel+miche=fixedfreak (max)
miche + campag record 111m + goldtec + EAI = MrSmith
Miche Primato Pista + Shimano UN54/110 + Formula + Dura Ace = CHUG_IT
Miche (Condor-branded) + Miche 107mm (cups adjusted 2mm towards drivechain) + Goldtec + EAI 1/8" = eeehhhh {46mm chainline}

Sugino Messenger + Phil wood (103 jis) + phil wood + phil wood= chris crash
Sugino RD + Sugino + ambrosio + miche = asm } both are pretty much spot on
Sugino RD + UN53/107 + Condor Goldtec + EAI= hamster
Sugino RD+Sugino/103+Sys-X+Dura Ace= MA3K
Sugino RD + Sugino(103) + SJS (SystemEx et al) + Dura Ace/Andel = ChrisNW {44 front, 42 rear}

Stronglight+UN53/107+Sys-X+Formula= MA3K
Stronglight + Shimano UN73 110mm + SystemEx + EAI -2mm = mr_tom
Stronglight + Stronglight + SystemEx + Tranzmission = BringMeMyFix
Stronglight + UN72 113mm + Miche + EAI = Richard Cheese (all 3/32 - chainline is not spot on, but the set-up is silent)
Stronglight + Shitmano UN26 110MM + Goldtec + EAI = RPM (3/32 spot on and silent)

Campagnolo Veloce Triple + Campag Veloce + Goldtec + Tranzmission = BringMeMyFix
Campagnolo Pista + Campag Athena + Phils (Hub and cog) = Jonny
Campagnolo Pista + Campag Pista + Campag Pista = Platini
Campagnolo Record + campag record + royce + eai = briankwan
Campagnolo Pista + Campagnolo Pista + Dura Ace + Dura Ace = Skully (can't be straight, I never get anything right)
Campagnolo Pista + Campag + ambrosia + Phil Wood = Sano
Campagnolo + Campag Centaur 111mm + Suzue Promax SB + EAI superstar = oddsock
Campagnolo Pista + Specialities TA + Phil Wood + Phil Wood = VelocityBoy
Campagnolo Pista + Campag Record 111mm (80's) + Phil + Phil = tristoo
Camapgnolo road double (Croce D'Aune) + 111mm ACH + Goldtec + Miche or On One or surly = AlexB

Dura-Ace + Sugino 75 + Dura-Ace (7600) + Dura-Ace = hassanr
Dura-Ace + Shimano UN72 (unknown length) + Surly + EAI Superstar = Object
Dura Ace+UN53/107+Dura Ace+Dura Ace= MA3K
Dura-Ace+ UN54/107+ Suzue Promax SB+ Surly= Eyebrows

DOTEK cheapy + Campag Mirage + Formula + Dura-Ace = fc9k
DOTEK cheapy + shimano BBUN26x113mm +OnOne small flange double fixed hub + Miche1/8sprocket = xroads

TA + TA(314) + Campag + Miche = Fruitbat
Truvativ + (??) stock bianchi pista + phil wood + EAI = asm }
Middleburn RS1+ Shimano XT 68 113+ White Bros Eno + Surly/ Miche= tommid
White Industries + Shimano 110mm + Phils + White Industries = big daddy wayne
Paul + Campag Centaur 111mm + paul + phil = flickwg
SR Sakae + Shimano UN54 118mm + SJS (SystemEx et al) + Andel = ChrisNW {42mm}
Zeus Pista (circa 80's) + Campag Pista 109mm + Formula + Miche = tristoo