If you are using the 31 rule (which is subtract 31 from the total distance) this is a good way to start however it is not the only way to attack the pattern.  I would suggest picking a target as far right as the 1 board and start with your feet as far right as you can to go straight.  With each practice shot move two boards left keeping your eyes on the same target to see how far you can go before having to move your eyes.  Also another key to success on the pattern could be bowling ball surface you can go as low as 500 or as high as 4000 depends on your style and roll.

Hope this helps a little

Also, the topography of the lanes will play a part in where you play as well. Even though the pattern may look lile your breakpoint should 4-6 board, it may need to be further in if the track area of this house is excessivly worn. Use this a guide, and then go with what the lanes tell you during practice.

I am simplifying the usual standard message:

Short (37 and less) - usually play outside part of lane
Medium (38-42) - could be any part of lane
Long - (43 and longer) usually play inside part of lane


However 2 things, lane topography and lane house shot memory, are major factors that may make you play out of the areas described above.

Please see these 2 Kegel articles on lane play:
http://www.kegel.net/V3/ArticleDetails.aspx?ID=46
http://www.kegel.net/V3/ArticleDetails.aspx?ID=2
 
Specifically speaking to that pattern, at 37 feet and heavy, the shot looks tricky from the graph.  With that volume my bet is that it will feel like a medium length pattern.  However, it is SUPER flat in the middle - there should not be any hold there.  Without knowing the lane surface or topography, I would look to start outside with whatever equipment works out there and try to stay outside by balling down. 

As already said though, let the lanes be your guide.  Outside might not be the best option based on topography and/or house shot memory. Be prepared to blow up Plan A - but don't be fooled either.  Pay attention to where bowlers are having success and see if that works for your game too.

30 ul is a high volume, unless, like said above
there is underlying friction
it may start out slick and then people pullout dull equipment, and then its really a mess

definitely want to try and play straighter up front, use something rolly, arcing and predictable

Since the pattern is shorter, you will want a ball that does NOT react quickly to friction = controlled arc from the outside.  Maybe a pin down solid...just my 2 cents.

Jitter,

If you're typically down and in on a house shot, you will want a ball with surface on this pattern.

Avabob, read my earlier comments...