In my opinion the vibrating clit vibes will not work. When determining power the reviews always help - but I look at batteries - the more power you have available the more likely you are to get what you need.
For example a rabbit style vibe with 3AA batteries lacks enough power to both vibrate and rotate effectively - 4AA battery versions are more likely to work well.
If you are looking for a vibe that will work during intercourse, I suggest the JimmyJane Form 2. It's body safe silicone, rechargeable and powerful enough to operate for a month or so between charges. With two motors - one on each side of your clit, the intensity of energy transfer is hard to duplicate.
We have many other powerful vibes that we don't use during intercourse, we like the Mystic Wand, Vuali and Red Roulette. The Vuali and Red Roulette can be used as both clit vibes and for penetration.
If I try to give my wife (after 2 children) an orgasm from intercourse alone - I rarely succeed. However if I use toys to give her an orgasm (or 2 or 3) first, then begin intercourse, she can have many more orgasms. Once you atart the ball rolling - the orgasms come easier (up to a point).
Enjoy the journey - you should be very pleased to have a partner who is dedicated to your satisfaction.