Lightroom "Edit in..." function - which settings do you use?

[KongKurs]

I often edit photos in Viveza and Photoshop CS5 via the "Edit in..." function in Lightroom, but I'm not quite sure if my settings are a bit off..

I'm shooting landscape from 11-12MB RAW files, and don't want to compromise the quality, since I'd like to be able to print the photos I've developed later, without JPEG artifacts, but the files often end in a +70MB TIFF file. This quickly add up on my storages..

My External Editing settings in LR3 are: 16-bit TIFF, ProPhoto RGB, 240 DPI. Is this overkill?

Which "Edit in" settings do you use?

 

[KongKurs]

No comments?
If you edit a photo outside of LR, which resolution do you use? Is 240 DPI ok?
Do you save RAW files as TIFF or JPEG?

 

[KongKurs]

Here are my settings in Lightroom's External Editing window, which gives +70MB photos from only 10 MB originals... (top third of photo is CS5):

Can nobody help me, by checking your Lightroom settings, for comparison?

 

[KongKurs]

bump

 

[KmH]

:scratch:

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Storage space is cheap.

Most humans can't see the difference between a JPEG and a TIFF.