WD26t speaker (tweeter & xo) or alternatives

[adejacko]

Hi All,
I'm a newbie and have just discovered & joined WD. I've been looking for a DIY speaker design that is right for me and after weeks of research I think the WD26t is the one. Unfortunately I can't afford the original tweeters or the Millennium and other £250 tweeters, so I need an alternative. Thinking of SEAS 29TFF Prestige, which is £45. Does anyone have any other suggestions in the £40 - £75 price range. Also, if anyone has used the 29TFF tweeter or alternative in their build, could you help me with the crossover please.
In fact, if anyone can advise, give their opinions and suggestions I would be very grateful. On their sound too. Also, I'd like to buy a SET amp with only 6w/ch. Would the WDts be sensitive enough? I noticed the driver has an spl of 89dB (8ohm) - my current old Tannoys are 89dB and have a reasonable loudness (in my smallish room) from my 2 watt valve headphone amp. So I think the WDts would be a match. I also have other SS amps, I'd just like to have a better SET amp.
Thanks. And I'm sorry if you've heard this all before.
Ade