Recipe Evaluation Please

Hi, I have punched in a Midwest recipe kit I have for a tripel into Beer Alchemy. The box says 17 lbs of Pilsen, the web says 13 lbs. I think 13 is probably correct but I am not sure. I also think the IBU's may be a bit low. Should I add more aroma hops or bittering to push that up (if needed). Any suggestions you might have would be great too. Feel free to yell for posting too much information. I am not totally sure what is needed for an evaluation of the recipe.


Midwest Belgian Tripel

Selected Style and BJCP Guidelines
18C-Belgian Strong Ale-Belgian Tripel

Minimum OG: 1.075 SG Maximum OG: 1.085 SG
Minimum FG: 1.008 SG Maximum FG: 1.014 SG
Minimum IBU: 20 IBU Maximum IBU: 40 IBU
Minimum Color: 4.5 SRM Maximum Color: 7.0 SRM


Recipe Overview
Wort Volume Before Boil: 6.08 US gals
Wort Volume After Boil: 5.28 US gals
Volume Transferred: 5.28 US gals
Volume At Pitching: 5.28 US gals
Volume Of Finished Beer: 5.02 US gals
Expected Pre-Boil Gravity: 1.061 SG
Expected OG: 1.081 SG
Expected FG: 1.013 SG
Apparent Attenuation: 83.6 %
Expected ABV: 9.2 %
Expected ABW: 7.2 %
Expected IBU (using Tinseth): 16.4 IBU
Expected Color (using Morey): 5.0 SRM
BU:GU ratio: 0.20 Approx Color:
Mash Efficiency: 75.0 %
Boil Duration: 60.0 mins
Fermentation Temperature: 64 degF


Fermentables

US Pilsen Malt
Amount:13lb 0oz
Mash/Steeped

Belgian Cara 20 Malt
Amount:8.00 oz
Mash/Steeped

Belgian Aromatic Malt
Amount:4.00 oz
Mash/Steeped

Sugar - Candi Sugar Pale
Amount:1lb 8oz
Start Of Boil


Hops
Slovenian Styrian Goldings
Alpha: 3.5 %
Amount:1.50 oz
IBU :15.1
Bagged Pellet Hops
All Of Boil

US Willamette
A:4.6 %
0.50 oz
IBU: 1.3
Bagged Pellet Hops
2 Min From End


Orange Peel, Sweet
1.00 oz
End of Boil


Yeast:
Wyeast 3787-Trappist High Gravity

Mash Schedule
Mash Type: Full Mash
Schedule Name: Single Step Infusion (67C/152F)
Rest at 153 degF 60 min

Aroma hops won't add much bittering, so if you're worried about the IBUs, you need to up the bittering hops.

With 1.081 gravity and only 16 IBUs, yeah, I'd probably consider increasing the bittering hops. You're mid-range for style on gravity, but below style on IBUs, which will take an already sweet-ish beer even sweeter.

This is what I got using Beer tools, it is a few points too dark, but I adjusted the Cara and Aromatic to the amounts that you had posted.

Hope it helps


Category: Belgian Strong Ale
Subcategory: Belgian Tripel
Recipe Type: All Grain
Batch Size: 5.25 gal.
Volume Boiled: 6.08 gal.
Mash Efficiency: 75 %
Total Grain/Extract: 15.25 lbs.
Total Hops: 2.0 oz.
Calories (12 fl. oz.): 317.9
Cost to Brew: $32.17 (USD)
Cost per Bottle (12 fl. oz.): $0.57 (USD)

Ingredients
--------------------------------------------------------------------------
13 lbs. English 2-row Pils
.5 lbs. Belgian Cara-Pils
.25 lbs. Belgian Aromatic
1.5 lbs. Candi Sugar Clear
1.5 oz. Styrian Goldings (Pellets, 6.00 %AA) boiled 60 minutes.
0.50 oz. Willamette (Pellets, 5.00 %AA) boiled 15 minutes.
Yeast: WYeast 3787 Trappist High Gravity

Vital Statistics
--------------------------------------------------------------------------
Original Gravity: 1.080
Terminal Gravity: 1.012
Color: 6.46 SRM
Bitterness: 39.0 IBU
Alcohol (%volume): 8.9 %

Thanks guys. I appreciate the info.