Please review the DRAFT order for insulation appended:

The roof-collar tie estimate is based on the calculation
that there are 36 16" bays in a 48 ft long roof. Each of
the 72 roof sections is 8 ft long. Each collar tie is
12 feet long. The aggregate length of each bay 8+12+8 is 28,
and 28x38 is 1008 linear feet.

Each bag of R-30 batts contains 11 pieces, each 4 ft long.
1008/44=22.91. The order of 23 batts should be sufficient.
According to the Internet, the price of $53.98 is reduced to
$37.79 per batt, if one buys more than 15 batts. Thus, dividing
the order into two parts, as I had originally considered would
increase the cost of the R-30 batts by a minimum of $129.52, and
possibly double the cost of transportation.

The estimate for the wall insulation is less reliable. I proceeded
by measuring the total areas of each of the four sides of the house,
subtracting the aggregate areas of windows, doors and of the 11.75 inch
thickness of the floor, giving an aggregate net of 1710 sq.feet
which might be insulated, (a figure from which I did not subtract 
the area of 3" base and ceiling plate)
either with 40 rolls of R-13 Kraft faced fiberglass,
each roll 16" wide and 32 feet long, covering 1707 sq.ft.
or with 53 rolls of R-15 Kraft faced fiberglass,
each roll 16" wide and 24 feet long, covering 1696 sq.ft.
The price of the 40 ft R-13 roll is $19.13, reduced to $13.39 if one'
buys 20 rolls or more.
The price of the R-15 rolls is not divulged on the Internet.

R-13 and R-30 insulation are immediately available in Hyannis. R-15
may or may not be available. Because of the small marginal difference
between R-13 and R-15 insulation efficiency, because of the likelihood
of substantial over-estimate of the amount we need, and to minimize delay,
I drafted the order below. Please review it as thoroughly as you see fit