I concur with all the above.
Just like to add the following:
To avoid the excess ROD with low IAS, make it a shallow approach. This unfortunately means you will be hanging on the power earlier so have an escape route if possible.
Is a curving approach possible?
If possible, get the aircraft into wind for the final descent into the confined area and obviously for the departure if you can do it, although the wind might not be the over-riding factor. Think about the best / shortest way out to get translational lift, before you go in!
Be prepared to throw away the landing all together and come back on a day with more favourable wind or all up weight (or you may not come back at all).
