I was in a similar position but way up higher.
D7000 is DX format isn't it, so effective 300+ish? with a 2x crop, 600. Mine was 200 in 4/3 =400 with a 75% crop, so about 600. Failings of lens (just a cheapie Sigma, tbh, so I can't complain) and camera sensor all too evident. Maybe I should sell my Bronicas which hardly get used and invest......