Had a similar plan and acquired strains I thought would be stealthy (short) and low odor. Northern Lights and ICExGrapefruit. Was planning only 4 plants hidden throughout the yard in large pots, behind strategically pruned bushes/etc (50'x175' yard). We're vigorous gardeners otherwise, so the odor is the only concern.
When I used to grow indoors years ago (took a hiatus), certain strains were smelly as hell, but others, like Mango, were not smelly at all...even indoors without any kind of smell control other than a closed door. Seemed from my recollection that this low volume outdoor plan would work.
Is the consensus that, even with the "low odor" strains, these will be too smelly to try this? Don't know that neighbors would turn me in, but don't want to have to make that choice.