Yes, perfectly doable. BTDT, used G7, cost to get there and back was around 120 Euro for the van. The journey took 35 minutes in light traffic.
We didn't just walk around the base but I bought tickets to get to the top (had the combo ticket for the lift and a glass of champagne at the bar at the top).
Got the tickets in advance on the tour eiffel website https://ticket.toureiffel.paris/en and it all went very smoothly. Like with airline award inventory, advance-sale tickets are limited and only made available 60 days in advance, so you need to be quick to snap them up as soon as they get added (T-60 days at midnight local time) . The party I did this for were first-time Paris and France visitors, and the experience was worth the money.