I realize this... I apologize for making an assumption. After initial rounds of polling the yak-7 and yak-1 would have been eliminated via HiTech's polling methods and I assumed people would defer to the yak-3.
What about the yak-6
Perfect little transport <we have 1 flying> with arms... you know when you get to town and 2-3 builds have popped up... excellent. It meets the requirements easy.
"Conceived as a light utility transport, the twin-engined low-wing Yakovlev Yak-6 was largely of wooden construction and flown for the first time in June 1942; it had retractable tailwheel landing gear and accommodated two crew and four passengers. An NBB (or short-range night bomber) version had external racks for five 100kg bombs under the fuselage and provision for a single 7.7mm ShKAS machine-gun, but the Yak-6 could also be equipped to carry stores or freight (including a 500kg external load) or for use as an ambulance aircraft, glider tug or close-support aircraft carrying 10 RS-82 rockets. Often flown with the main landing gear units locked down, the Yak-6 was also used to supply partisans, and by 1944 most operational units had one of these aircraft to ferr y personnel between bases. Production totalled about 1,000."
Oh I guess you didnt mention it