Another disguise question

[RedShirtNo5]

So, here's a situation that came up recently (simplified of course):

Round 1. Male elf rogue/wizard (PC) kills evil male orc sentry.
Round 2. PC hides body.
Round 3. PC casts alter self/change self to disguise himself as the sentry. PC has 5 ranks in disguise.
Round 4. Orc warriors enter the room.

Does PC get a disguise check? Disguise takes 1d3x10 minutes, but the spell is a single action to cast. Assuming the PC gets a check, at what total modifier?

-RedShirt

DISGUISE (CHA)
Minor details only +5
Disguised as different gender –2
Disguised as different race –2
Disguised as different age category –2

If you are impersonating a particular individual, those who know what that person looks like get a bonus on their Spot checks according to the table below. Furthermore, they are automatically considered to be suspicious of you, so opposed checks are always called for.

Action: Creating a disguise requires 1d3×10 minutes of work.

Alter Self
Casting Time: 1 standard action
Duration: 10 min./level (D)
You can freely designate the new form’s minor physical qualities (such as hair color, hair texture, and skin color) within the normal ranges for a creature of that kind. The new form’s significant physical qualities (such as height, weight, and gender) are also under your control, but they must fall within the norms for the new form’s kind. You are effectively disguised as an average member of the new form’s race. If you use this spell to create a disguise, you get a +10 bonus on your Disguise check.

Disguise Self
Casting Time: 1 standard action
Duration: 10 min./level (D)
You make yourself—including clothing, armor, weapons, and equipment—look different. You can seem 1 foot shorter or taller, thin, fat, or in between. You cannot change your body type. Otherwise, the extent of the apparent change is up to you. You could add or obscure a minor feature or look like an entirely different person.
The spell does not provide the abilities or mannerisms of the chosen form, nor does it alter the perceived tactile (touch) or audible (sound) properties of you or your equipment.
If you use this spell to create a disguise, you get a +10 bonus on the Disguise check.

 

[Kurotowa]

I would say he does get a check. Read the wordings carefully. It takes 1d3x10 minutes to create a disguise using a skill check. The spells say, "If you use this spell to create a disguise." To me, that says that the spell has taken the place of the work to create a disguise with makeup and props. You don't have to spend 10-30 minutes messing around with fake noses and false busts, the spell does it all instantly.