Confused about dealing with interlaced video?

[Yobbo]

I know when processing interlaced footage it's important to separate the fields first, then reinterlace afterwards.

Is it advisable to do something like this to maximise quality -

AssumeBFF()
yadifmod(order=0, mode=1, edeint=nnedi3(field=2))

## (processing/denoise etc) ##

AssumeBFF()
SeparateFields()
SelectEvery(4,0,3)
Weave()

OR, is this redundant and a simple bob or separate fields suffice? Also nnedi2 instead of nnedi3 perhaps? I don't want to cut corners, I need maximal quality for this particular DV footage I have.

Thanks in advance!