I would suggest starting at 15 mg hydrocodone (3 tablets), which would not require a CWE unless your liver is in poor health - either way do NOT mix with any other drugs, unless you take a certain drug daily on which you are dependent and have sufficient tolerance, but in that case use the minimum amount of whatever drug that may be to stay and feel "normal" or "well". 15 mg should give an opiate-naive individual a good go, but it might feel like a bit much at times, and on the other hand could feel somewhat underwhelming. If nausea occurs, and it is quite possible it will, simply lie down, and it will fade quickly. Why I say it could feel underwhelming is because you don't get "fucked up" like you would if you drank a lot or took a lot of benzos, and you won't get tweaked out like you might with amphetamines. Opiates are very gentle in their high, and usually their effects in general, if you take a proper dose. BUT, just because they are gentle, does not mean they are not powerful. Opiates have given me the most comfortable, content euphoria out of all the drugs I have used. Opiates are VERY euphoric. Hydrocodone might feel somewhat stimulating to you, or perhaps somewhat sedating, or perhaps both at the same time. But, opiates will remove anxiety and pain of any sort, or at least make it seem unimportant. Whenever I am on opiates, not much seems worth worrying about, and I can just bask in the euphoria. Anything you do will be enjoyable, but try not to be active. Calmer and less active activities are enjoyable with opiates. That is not to say you can't go out and about, but don't be exercising or jogging or the like. Often lying down watching a movie or TV is my favorite thing to do, and the movie is ALWAYS good. That is the thing about opiates, they make everything seem better. You are able to care about what you want, but you don't have to worry about troubling matters. They are entirely and utterly relaxing. They are warm, snuggly, and cozy drugs. And, I do not exaggerate.
Opiates are an acquired taste for some, however, where the "high" just doesn't click the first time or even several after. There are some people who don't even like opiates, for what reason I will never really know. But, some people, like me, enjoy their first time just as much as any other time. There is no real crash either with most people, you just slide back to baseline sobreity slowly. For you 15 mg seems like it would be a good dose, though 10 mg would be playing it a bit more cautious. I still usually recommend 15 mg for the opiate-naive individuals as a basic starting dose. The come-on of the hydrocodone, orally, may vary in perception as it is your first time, but could be rather quick or take a little longer. As I said, don't mix it with anything else your first time. A pure opiate high is the best. If you do have many, be VERY careful because opiate addiction is an insidious and very real addiction. I would say opiates, out of all drugs, have the highest potential for addiction, or at least the highest attraction. Don't dose everyday, or even every other day. You will want to keep the opiate high something special, avoid addiction, and subjective or biological tolerance. I would say use them once a week MAX, but for best results maybe limit yourself to two or three times a month or less frequently.
And, again, if you get nauseated, lie down. Itching is a common side-effect, by the way, and does not indicate allergic reaction. This is not to say allergic reaction is impossible, because there are certain people who are allergic (to varied degrees) or cannot tolerate opiates, but I am just saying itching is common. Research hydrocodone and opiates, in general, more. Know your stuff. Knowledge is power, truly.