1) Yes. You can go ahead and purchase the property in the joint names of yourself and your wife.
2) There will be no issue at all in claiming capital gains to the extent of 60Lakhs.
3) Capital gains will not be limited to the share of ownership.
4) Please refer to leading case law on the query posted by you.
4a) Exemption from capital gain under section 54F is available when the house is purchased jointly with spouse, if the taxpayer, invests wholly in it. [CIT v. Ravinder Kumar Arora  15 taxmann.com 307/203 Taxman 289 (Delhi)]
4b) In this case the taxpayer who was an individual sold a plot of land and claimed capital gains arising therefrom as exempt under section 54F by purchasing residential house property in the joint name with his wife to avoid litigation after his death.
4c) The tax authority allowed only half of the exemption claimed on the ground that the property was purchased jointly with his wife's name.
4d) On appeal, while the first appellate authority ruled in favour of the tax authority, the Tribunal ruled in favour of the taxpayer. Aggrieved by this the tax authority appealed to the High Court.
4e)It was held that the taxpayer independently invested in the purchase of the house property, though jointly with his wife and paid stamp duty, corporation tax, commission and legal expenses in connection with the purchase. 4f) His wife did not invest any amount and, therefore, the conditions under section 54F of the ITA stood fulfilled and the property had to be treated as purchased in his name.
4g) Purchase of the property in joint name would not make any difference.
4h) The taxpayer was the actual and constructive owner of the property. Section 54F states that the property should be purchased by the taxpayer but does not stipulate that it should be purchased in the name of the taxpayer only.
4i) Hyper-technical ground should not impede the object of the provision which is to be provide impetus to housing construction.
4j) The court also placed reliance on various decisions of the High Courts in granting exemption under similar circumstances under section 54. Thus, the claim of the taxpayer was allowed.
Hope this helps.